Heel-breasting machine



E. B.-GRUSH.

HEEL BREASTING MACHINE.

APPLI=CATION FILED MAR. 18. 1918.

Patented Dec. 23,1919.

2 SHEETS-SHEET l- UNITED snares PATENT OFFICE.

ELMER B. GRUSH, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED "SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Dec. 23, 1919.

Application filed March 18, 1918. Serial No. 223,094.

.To all whom it may concern:

Be it known that I, ELMER B. GRUSH, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Heel-Breasting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for breasting heels and particularly to machines for breasting heels after they are attached to the shoes.

It has heretofore been a usual practice to breast attached heels upon a machine having an organizationby which movement of V the knife is arrested when the knife has out to the shank of the shoe. Machines of this construction, however, have the disadvantage that the knife and its actuator which are relatively heavy and which move very quickly, have considerable momentum and it is hence difiicult to arrest the knife quickly and accurately at exactly the proper point.

An object of this invention is to provide an improved machine in which they above disadvantage and other disadvantages are overcome and one which is convenient and expeditious in operation.

In its broader aspects, a feature of the invention consists in a novel organization of a cutting tool and a work support arranged for relative movement to effect a cutting operation upon the work and to prevent further cutting action as by freeing the work support when the proper limit of action of the tool upon the work is reached.

Another feature of the invention consists in an organization including a knife having a stroke the limit of which is constant, shoesupporting means which rigidly upholds the shoe during the operation of the knife, and means which allows movement of the support when the knife has cut through the heel to the shank so that the cutting action of the knife will cease. As herein shown, the means for holding the support during the cutting action of the knife comprises a look ing device, for instance a ball or roller clutch mechanlsm, and the means for releasmg the support comprlslng a member carried by the knife slide or support which contacts with the shoe referably at the shank near the knife. bnneetion is provided between the said shoe engaging member and the locking device for releasmg the latter when the member comes incontaet with the shoe. This connection is so on ganized that movement of the member with the knife is permitted until the member engages the shank, whereupon the lock is immediately released to allow the jack to move in the same direction as the knife and consequently to cause the cutting action of the knife to cease.

Another feature of the invention consists in means for-accelerating movement of the shoe support after-its release tocause the support to keep ahead of. the knife during the remainder of the knife stroke after its cutting action has stopped. In the construction shown herein, a tread plate for applying pressureto the heel of the shoe is resiliently held in a lowered position,- and manually operated means is provided for raising the shoe support to force the heel of the shoe against the tread plate to clamp and position the heel prior to the action of the knife. The. resiliently depressed tread plate operates to accelerate the downward movement of the support when it is released at the completion of the cutting action of the knife. As herein shown, the manual means which raises the shoe support is ar ranged to effect the starting of the machine upon further. movement, thereof.

Another feature of the invention consists in automatic means for restoring the shoe support to its initial position after the hold ing means has been released and the support has been allowed to move with the knife. As herein shown, an element of the knife carrier is arranged to engage the shoe support during return movement of the carrier and to reposition the support for the next operation.

These and other features of the invention willappear more fully from the following detailed description when read In connec tion with the accompanying drawings and will be pointed out in the appended claims. In the drawings,-

Figure 1 is a side view partly in section of a machine embodying this invention;

Fig. 2 is a front view of the machine partly in section; and

Fig. 3 is a detailed view of mechanism shown in Fig. 2.

Referring to Fig. 1 of the drawings, the numeral 2 indicates the frame of the ma chine, in the lower part of which is mounted a crank shaft t carrying a crank 6 (Fig. which actuates a slide 10 mounted for ver tical reciprocation in guides on the machine frame by means of a connecting rod 8. An extension 12 of the slide 10 is provided with knife clamping means comprising an abutment 1% for one side edge of a knife 15 and a clamping member 16 pivoted at 18 to the extension 12, which member is arranged to be clamped against the other side edge of the knife by a screw having a hand wheel 20. An abutment for the top end of the knife is provided by a screw 22 threaded through a portion of the extension 12 and having an enlarged end to engage the knife and a hand hand wheel 24 by which it may be turned to adjust the knife vertically and to accommodate knives of different lengths. On the shaft 6 is a pulley 26 to which power is applied and which may be connected at times to the shaft 6 to effect a single revolution of the shaft by one revolution clutch when a treadle 28 is depressed. The treadle 28 is pivoted at 30 to the base of the frame and is held upwardly by a spring 32. On the treadle 28 is pivoted a latch M (Fig. 2) having a shoulder 36 which, when the treadle 28 is depressed, engages a forwardly bent portion 38 of an angle lever pivoted at tO. A vertical arm 42 of the lever is normally held by a spring at under a stop projection l6 of the clutch to cause the pulley 26 to be released from driving connection with the shaft at. When the treadle 28 is depressed, the shoulder 36 strikes the portion 38 of the angle lever and causes the arm 42 to be swung from beneath the projection 46, whereupon the pulley 26 is clutched to the shaft 4 and causes the crank 6 to revolve. During its revolution, the crank, or a projection 7 thereon, strikes an upturned end 48 of a rod 50 and moves it longitudinally. The rod 50 is pivoted at one end to the latch 2n and at the other end is guided through a lug 52 on the frame, the rod 50 being'held in normal position by a spring 54: arranged on the rod between a fixed collar 56 and the lug 52. The described longitudinal movement of the rod 50 swings the latch 3% out of engagement with the portion 38 and allows the arm 4L2 to be returned by the spring at into position beneath the stop projection i6 and causes the crank to be stopped when its revolution is completed.

The work support comprises a sleeve 60 mounted for vertical movement in a projecting member 61 bolted to the frame 2. In the sleeve and movable longitudinally therein, is a plunger 62, to the upper end of which is pivoted at 63 a threaded post 6%. kn arm 65 upwardly extending from the sleeve 60 is provided with steps 66, 68 to limit swinging movement of the post 64 in either direc tion. On the post 6% is a hand wheel 70 threaded upon the post. Above the hand wheel is a sleeve 72 splined to the post, which may be adjusted vertically by rotating the hand wheel 70. member 7% is pivoted at '76 to the upper end of the sleeve T2 to form a last support. The member preferably provided with a last pin 7 8. The member 74 and pin 7 8 are adjustable about the pivot 76 by means of a screw 80 threaded through a stud 82 rotatably supported in the sleeve 72. The screw 80 has its upper end rotatably secured to a stud 8% rotatably mounted in the member '74. The screw operated by a hand wheel 86 to tip the member 7 about the pivot 7 6 to position the shoe heel at the proper inclination to the knife 15.

A tread plate 90 is arranged to contact with the top lift or tread face of the heel. The plate 90 has on its upper surface a headed stud 92 which engages T-slot in a member 94 pivoted at 96 upon a vertically movable slide 98 guided in a bracket 100 on the frame 2. The slide 98 is held oepressed by a spring 102 having its ends connected to pins 104k, 106 which are respectively on the slide 98 and on the bracket 100. lvlovement of the plate 90 and member 9-1-t about the pivot 96 in response to pre 'urc of the heel is adjustably limited by a screw 108 threaded through an upstanding portion of the member 9% and engaging the slide 98. The slide may be swung downwardly about the pivot 96 to allow free access to the knife and is yieldingly held in operativeposition by a spring plunger 110 in the member 9% having a beveled end to engage a suitably formed surface of the slide 98. The plate 90 is held in adjusted position longitudinally of the shoe by a bolt passing through the member 9a and engaging a slot in the plate 90, the plate being held against the member 9st by a thumb nut 11; to clamp it in adjusted position. The shoe is raised against the plate 90 by the action of a cam 120 again t a roller 122 mounted on the lower end of the ydunger 62. The cam 120 is operated by an adjustable thrust rod 12st pivoted thereto at 126 and having its other end pivoted at 128 to an upstanding arm 130 of the treadle lever 28. lVhen the treadle is depressed. the cam 120 is operated to move the plunger 62 verticallv and therefore to move the shoe heel against the tread plate 90 which yields upwardly against the spring 102. The lower face of the cam 120 rests upon anti-friction rollers 132 mounted on the lower end portion of the sleeve 60. The sleeve 60 is normally held against depression by a looking or holding device comprising a member clrcular 1n cross section, for example, a ball or roller clutch (Fig. 2). A ball or roller 140 rests against an obliquely arranged plate 142 upon the projecting member 61 on the frame. The action of the roller is made more positive by a spring 144 lying between the roller and a cap plate 146 secured to the member 61. Be neath the holding device or roller 140 is a plunger 148 which is moved upwardly by a lever 150 fulcrumed at 152 to the member 61 and having its inner end connected to an operating rod 154 which is moved down: wardly when the knife reaches the end of its operative movement.

To effect this, a member 160 is arranged to engage the shank of a shoe when the knife approaches the end of its cutting movement. The shank engaging member 160 is pivotally mounted upon an arm 1620f a lever pivoted at 164 to the knife carrier 12. Extending below the pivot 164 is an arm 166 carrying a roller 168. This roller rides along a vertically arranged plate 170 as the.

knife carrier descends. The plate 170 is mounted on" the lower arms 172 of the angle levers which are pivoted at 17 4 to an extension 17 5 of the frame 2. Laterally extending arms 176 of the angle levers are pivoted to a block 17 8 which is secured to the upper end of the rod 154. It will be apparent that as the angle lever 162, 166 descends with the knife, the roller 168 will pass vertically along the plate 170 against which it is lightly held by a spring 180, and that when the member 160 engages the shank of a shoe, the lever 162, 166 will be operated to press the roller 168 against the plate 170 and cause the angle levers 172, 176 to operate to depress the rod 154 by which the lever 150 is operated to raise the plunger 148 and roller 140. This, of course, releases the sleeve 60 and allows the shoe support to descend and thus Prevent-s further action of the knife.

On the knife carrying slide 10 is a downward and outward xtension 182 carrying an upwardly spring pressed plate 184 which lies beneath a rearward extension 186 of the arm 65 having thereon a stop screw 188 to contact with the plate 184.

In the operation of the machine, the shoe support is swung outwardly until the post 64 engages the stop 68. A shoe having a last therein is then placed upon the last pin 7 8 and the shoe is swung into the position shown in Fig. 1. The hand wheel/ is operated, if necessary, toadjust the shoe vertically so that the tread face of the heel will be closeto the lower face of the tread plate 90. The hand wheel 86 may then be operated to adjust the plane of the tread face of the heel into parallelism with the .plate 90, or the tread plate may be adjusted by the screw 108 for a similar purpose, and. both may be adjusted to vary the angle between the breast and the shank. The treadle 28 is next depressed to operate the earn 120 by which the shoe support is raised to press the .shoe against the tread plate 90 and to raise the plate against the spring 102. The shoe is now yieldingly clamped in position and may be swung on the pin 76 or moved longitudinally to bring the breast portion of the heel into th proper relation with the front edge of the plate 90 which indi cates the line on which the cut of the knife will be made. the sleeve 60 and hence all the shoe supporting parts are held against depression by the clutch 140 as shown in Fig. The treadle is'now further depressed causing the shoulder 36 of the latch 34 to engage the arm 38 and trip the clutch, the crank 6 then being operated by power to actuate the knife. As the knife carrier 12 descends, the knife 15 cuts through the heel, and the member 160, carried also by the knife carrier 12, finally comes into engagement with the shank of the shoe and causes the angle lever 162, 166 to swing on its pivot 164, press the roller 168 against the plate 170, and move it laterally. The arms 17 2 are thus swung forwardly about their pivots 174 and the arms 17 6 are swung downwardly about the same pivots to depress the block 178 carrying the rod 154. The depression of the rod 154 operates the lever 150, raises the plunger 148, and releases the roller 140 from holding en- I gagement with thesleeve 60. The adjustments are such that the release of the sleeve 60 occurs at the moment when the knife has cut through the heel to the shank. Immediately upon release of the sleeve 60, the shoe support and shoe drop, the movement being accelerated bythe reaction of the spring 102 and further cutting action of the knife is arrested. The knife then completes its stroke and the crank 6 strikes the upturned end 48 of the rod 50 and 'withdraws the shoulder 36 from engagement with the arm 38, allowing the spring 44 to bring the stop arm 42 into position to throw out the clutch when the rotation of the shaft 4 is completed. During the upward movement of the slide 12, the plat 184 engages the stop screw 188 on the shoe support and returns the shoe support to its normally raised position before the machine stops. When the treadle is released, the spring 32 acts to withdraw the cam 120, thus releasing the shoe clamping engagement with the plate 90 and permitting it to be swung out of the machine. If the treadle is released before It will be understood that the end of the cycle, the downward pressure of the plunger 62 upon the cam 120 is sufficient to retain it in position until the shoe support drops, whereupon the spring 32 will act to retract the cam 120 and raise the treadle.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine of the class described having, in combination, a work support, a knife, means for relatively moving the support and the knife to effect a cutting operation of the knife on the work, and means for causing movement of the work support relatively to the knife to arrest the action of the knife when its cutting operation on the work is completed.

2. A machine of the class described having, in combination, a work support, a knife, means for relatively moving the support and the knife to effect a cutting operation of the knife on the work, and automatic means for causing movement of the work support relatively to the knife to arrest the action of the knife after a predetermined relative movement of the knife and support have taken place.

3. In a machine of the class described, the combination of a work support, a cutting tool, means for relatively moving the support and cutting tool positively and unyieldingly to effect a cutting operation of the tool, and means becoming operative as soon as the required relative movement has been secured and the cutting operation completed for causing the supporting action of the work support against the tool to cease.

a. In a machine of the class described, the combination of a work support, a cutting tool, means for relatively moving the support and cutting tool positively and unyieldingl to effect a cutting operation of the tool, and means becoming operative after a predetermined relative movement has taken place and the cutting operation has been completed for causing the supporting action of the work support against the tool to cease while movement of the tool continues in the same direction.

5. In a machine of the class described, the combination of a knife, a shoe support, means for holding the shoe support during the cutting operation of the knife, means for automatically releasing the shoe support when the cutting operation is completed to allow the support to move with the knife, and means for restoring the shoe supportautomatically to initial position.

6. In a machine of the class described, the combination of a knife carrier, a knife, a shoe support, means for upholding the shoe support during the cutting operation of the knife, means for automatically releasing the shoe support when the cutting operation is completed to allow the support to move with the knife, and means operated by the knife carrier for restoring the shoe support automatically to initial position.

7. A heel breasting machine having, in

combination, a shoe support, a knife, means for operating, the knife positively and unyieldingly through the heel to the sole, and means acting automatically to permit movement of the shoe support with the knife as soon as the knife reaches the shank of the sole.

8. A heel breasting machine having, in combination, a breasting knife, a shoe support, means for upholding the shoe support against the action of the knife, means for operating the knife positively, and means for releasing the holding means when the knife reaches the shank of the shoe.

9. A heel brea-sting machine having, in combination, a breasting knife, a shoe support, means for upholding the shoe support positively during the cutting action of the knife, a stop constructed and arranged to engage the shank of the shoe while the knife is cutting, and connections between the stop and the shoe support to effect release of the holding means when the knife has cut through the heel to the shank.

10., A heel breasting machine having, in combination, a reciprocating breasting knife, a shoe support, means for holding the shoe support in raised position, a stop moving with the knife and arranged to Contact with the shoe during the cutting action of the knife, and means operated by the stop for releasing the support when the cutting action of the knife is completed.

11. A machine of the class described having, in combination, a knife, a reciprocating knife carrier, a shoe support movable in the direction of reciprocation of the knife, means for locking the shoe support in initial position, means mounted on the knife carrier arranged to contact with the shoe, and means operated by relative movement of the said means and the knife carrier for causing movement of the shoe support to stop the cutting action of the knife.

12. In a machine of the class described, the combination of a vertically reciprocating knife the lower limit of movement of which is constant, a shoe support constructed and arranged for presentation of a shoe beneath the knife, a resiliently depressed tread plate for the heel of a shoe on the support, means for effecting a vertical movement of the shoe support to clamp the heel against the tread plate, and means constructed and arranged to operate when the desired cutting action of the knife is completed to effect movement of the shoe sup port with the knife to cause its cut-ting acto the sole, and automatic means for causing;

reaction of the support against the knife to cease as soon as the knife has cut to the shank of the sole.

l i. A heel breasting machine having,in combination, a breasting knife, a shoe support, means for rigidly upholding the shoe support against the action of the knife, means for opera-ting the knife positively in adirection toward the shank of the shoe, and means for effecting movement of the support in the same direction as the knife when the knife reaches the shank'of the shoe.

15. In a machine of the class described, the combination of a knife, a shoe support, means for upholding the shoe support positively during the cutting action of the knife, a stop constructed and arranged to engage the shoe while the knife is cutting, connections between the stop and the shoe support to efiect release of the holding means after a predetermined movement of the knife has taken place, and means for accelerating movement of the shoe support after its release.

16. A heel breasting machine having, in combination, a reciprocating breasting knife, a knife carrier, a shoe support, means for holding the shoe support in raised position, a stop moving with the knife and arranged to contact with the shoe during the cutting action of the lmife, and means operated by relative movement of the stop and knife carrier for releasing the support when the cutting action of the knife is completed.

17. A machine of the class described having, in combination, a knife, a reciprocating knife carrier, a shoe support movable in the direction of reciprocation of the knife, means for locking the shoe support in initial position, means mounted on the knife carrier arranged to contact with the shoe, and means operated by relative movement of the said means and the knife carrier for effecting release of the shoe support to permlt movement thereof with the knife.

18. In a machine of the class described, the combination of a vertically reciprocating knife the lower limit of movement of which is constant, a shoe support, means for locking the support against movement in response to the action of the knife, a resil1- ently depressed tread plate for a shoe heel, manual means independent of the locking means for effecting a vertical movement of the shoe support to clamp the heel against the tread plate, and means constructed and arranged to operate when the desired cutting action of the knife is completed to unlock the shoe support and permit movement of the shoe support with the knife and'under theinfluence of the tread plate pressureto cause its cutting action to cease.

19; A machine of the class'descr'ibed having, in combination, a work support, a knife, means for relatively moving the support and knife toeifect the cutting operation of the knife, and means for automatically causing movement of the work support with the knife to begin as soon as the knife has finished its out.

'20. A heel breasting machine having, in combination, a breasting knife, a. shoe support, means for upholding the shoe support against theaction of the knife, means for operating'the knife positively, means forreleasing the upholding means to allow movement of the support with the knife when the knife reaches the shank of the shoe, and means for accelerating the movement of the shoe support.

21. A heel breasting machine having, in combination, a breasting knife, a shoe support, means for upholding the shoe support positively during the cutting action of the knife, a stop constructed and arranged to engage the shank of the shoe while the knife is cutting, connections between the stop and the shoe support to effect release of the holding means when the knife has cut through the heel to the shank, and means for restoring the support to initial position.

22. A heel breasting machine having, in combination, a reciprocating breasting knife, a shoe support, means for holding the shoe support in raised position, a stop moving with the knife and arranged to contact with the shoe during the cutting action of the knife, means operated by the stop for releasing the support when the cutting action of the knife is completed to allow it to drop, and means operating upon return movement of the knife to raise the shoe support.

23. A machine of the class described having, in combination, a knife, a reciprocating knife carrier, a shoe'support movable in the direction of reciprocation of the knife, means for locking the shoe support in initial position, means mounted on the knife carrier arranged to contact with the shoe,

means operated by relative movement of the said means and the knife carrier for effecting release of the shoe support to permit movement thereof with the knife and to cause the cutting action of the knife to cease, and means operated by the knife car- 7 rier upon its return movement for restoring the support to initial position.

24. In a machine of the class described, the combination of a vertically reciprocating knife, the lower limit of movement of which is constant, a shoe support constructed and arranged for presentation of a shoe beneath the knife, a resiliently depressed tread plate for a shoe heel, means for raising the shoe support to clamp the heel against the tread plate, and means con structed and arranged to operate when the desired cutting action of the knife is completed to permit movement of the shoe support with the knife under impulse of the tread plate to cause its cutting action to cease.

25. A machine of the class described having, in combination, a work support, a knife, means for operating the knife positively and unyieldingly through the work, and means operating automatically to permit movement of the work with the knife as igezaeee soon as a predetermined movement of the knife has taken place to cause the cutting action of the knife to cease.

26. In a machine of the class described, a reciprocating knife the stroke of which is constant and greater than that required to cut through the work, a work support movable in the same directions as the knife, means for locking the work support, and means acting automatically to release the work support for movement with the knife during its cutting stroke and after a predetermined movement of the knife has taken place to cause further cutting action of the knife to cease.

In testimony whereof I have signed my name to this specification.

ELMER B. GRUSH. 

